Art of treating leather



Patented Mar. 12, 1929.

UNITED STATES AMBROSE H. BOSEN'IEI-IAL, OF SALEM, MASSACHUSETTS. I

ART OF TREATING LEATHER.

No Drawing.

My invention relates generally to the art of treating leather and refersmore especially to a. process of imparting a metallic appearance toordinary leather, patent leather or imitation leather.

In carrying my invention intopractice, I

first apply to the leather a coating of a bismuth combination such as acoating of bismuth oxychloride which may be either in the formoff'powder or in the form of a solu- The bismuth oxytion in alcohol orwater.

chloride is well rubbed into the leather and the latter is polisheduntil smooth.

1 next apply to the thus treated leather surface, a coating of cellulosei. e. gun cotton in solution, preferably acetone. This may be sprayed orflowed onto the leather surface and is permitted to dry thereon. The

cellulose solution may have incorporated therein the desired color ormetallic shade which is to be imparted to the leather.

As an alternative to incorporating the color in the cellulose. solution,a basic color i. e. one soluble in alcohol may be applied to 2 thetreated surface after the cellulose solu- Application filed September12, 1925. Serial No. 56,088.

tion has been applied and has become dry.

I may, at this stage, ap ly another coating of bismuth oxychloride, 1nsolution, the result of which will be to produce relatively lightcolors. so

For the purpose of protecting the leather surface, treated as abovedescribed, against deterioration I find it desirable to apply thereto acoating of a flexible varnish, sue-h as cellulose varnish or the like. i

'It will be understood that the term leather as used in the foregoingspecification and in the appended claim is intended to include realleather, patent leather and imitation or artificial leather.

A method of treating leather, which consists in applying thereto acoating of his muth oxychloride in solution, a coating of cellulosesolution, a coloring medium, a 4 second bismuth oxychloride solution,and a flexible varnish. t

In testimony whereof I affix my signature.

AMBROSE H. ROSENTHAL.

